I like that you looked for adapters that match the machine’s style - that’s attention to detail 
Regarding Luban not remembering the IP: This actually surprises me, because I seem to remember that with Snapmaker 2.0 Luban stored the IP and suggested it on the next connect. What I am certain that works with Snapmaker 2.0 & Luban is that it remembers a DNS name - thats how I have it since ages. I created a DNS entry for the machine, and this goes into the Luban dialog. This is definitely remembered for SM 2.0. I would be surprised if Luban handles this differently for Artisan… why should it? Admittedly, the Snapmaker engineers sometimes come up with weird ideas…
EDIT: This post: Works: USB to Ethernet adapter - #19 by jcbartle confirms that Luban with SM2 remembers also the IP…